CN109882171B - Internal spraying device and cutting mechanism of heading machine - Google Patents
Internal spraying device and cutting mechanism of heading machine Download PDFInfo
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- CN109882171B CN109882171B CN201910288077.6A CN201910288077A CN109882171B CN 109882171 B CN109882171 B CN 109882171B CN 201910288077 A CN201910288077 A CN 201910288077A CN 109882171 B CN109882171 B CN 109882171B
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- 238000005507 spraying Methods 0.000 title claims abstract description 85
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 443
- 238000007789 sealing Methods 0.000 claims abstract description 66
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 13
- 230000002035 prolonged effect Effects 0.000 abstract description 9
- 239000003921 oil Substances 0.000 description 91
- 230000000694 effects Effects 0.000 description 10
- 238000001816 cooling Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000003068 static effect Effects 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 230000000670 limiting effect Effects 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Abstract
The application relates to the technical field of heading machine equipment, in particular to an internal spraying device and a heading machine cutting mechanism. The inner spraying device is arranged between the output shaft of the cutting speed reducer in the cutting part of the heading machine and the cutting main shaft and is used for transmitting torque and providing high-pressure water for the cutting part. The inner spraying device comprises a sleeve, a shaft sleeve and a water pump, wherein the water pump is positioned in the shaft sleeve, the sleeve is sleeved outside the shaft sleeve, the sleeve and the shaft sleeve are coaxial, and the shaft sleeve and the water pump can rotate relative to the sleeve. The outer sleeve is provided with an external water port and an annular water inlet cavity which are communicated, and the external water port is used for connecting an external water pipe. The inner spraying device is characterized in that a water pump accommodating space for accommodating a water pump is arranged in the shaft sleeve of the inner spraying device, and a water inlet channel and a water outlet pipe of the water pump are correspondingly formed, so that the water pump of the inner spraying device is built in; the water inlet channel is communicated with the annular water inlet cavity and is used for supplying water to the water pump; the water pump of the inner spraying device is internally arranged so that the annular water inlet cavity is communicated with the water inlet channel through low-pressure water, and the sealing pressure is small, so that the reliability of water inlet sealing is high, and the service life of a sealing piece is prolonged, and the service life of a spraying system in the cutting part is prolonged.
Description
Technical Field
The invention relates to the technical field of heading machine equipment, in particular to an internal spraying device and a heading machine cutting mechanism.
Background
The development machine is widely used for development of underground coal mine roadways, the cutting internal spraying device is a part of the development machine and is used for spraying water mist in the working process of the development machine so as to play roles in inhibiting dust, cooling cutting picks, reducing cutting pick consumption, avoiding cutting sparks and the like. Specifically, the cooling water of the spraying device in the cutting is supplied by an external water pump, then enters the cutting part and is atomized and sprayed out from a nozzle arranged on the rotating cutting head through an internal flow passage of the cutting part, and is directly sprayed around the cutting pick.
However, the water supplied by the water pump is high-pressure water, so that the water inlet of the cutting inner spraying device is high-pressure water, the pressure of the water inlet is high, and the sealing effect is poor and the service life is short because the rotary sealing diameter of the water inlet is large.
Disclosure of Invention
The utility model aims at providing an interior atomizer and including this interior atomizer's entry driving machine cutting mechanism to solve the technical problem that atomizer department rotary seal effect is poor, life is short in cutting in the cutting that exists among the prior art to a certain extent.
The first aspect of the application provides an internal spraying device for a heading machine, which comprises an outer sleeve, a shaft sleeve and a water pump, wherein the outer sleeve is sleeved outside the shaft sleeve, the water pump is positioned in the shaft sleeve, and the water pump and the shaft sleeve can rotate relative to the outer sleeve;
the outer sleeve is provided with a foreign water interface and an annular water inlet cavity which are communicated with each other; the external water interface penetrates through the outer wall of the outer sleeve, and the annular water inlet cavity is arranged along the circumferential direction of the outer sleeve and penetrates through the inner wall of the outer sleeve;
a water pump accommodating cavity, a water inlet channel and a water outlet pipe are arranged in the shaft sleeve; the water pump accommodating cavity is used for accommodating a water pump; one end of the water inlet channel is communicated with the annular water inlet cavity, and the other end of the water inlet channel is communicated with a water inlet of the water pump; the water outlet pipe is communicated with the water outlet of the water pump, and the water outlet end of the water outlet pipe is arranged towards the head of the cutting part of the heading machine;
and a sealing piece is arranged at the joint of the annular water inlet cavity and the water inlet channel.
Further, the sealing element is an annular sealing element, and the annular sealing element is arranged on two sides of the annular water inlet cavity along the axial direction of the shaft sleeve.
Further, a sealing ring is arranged on the outer wall of the water outlet end of the water outlet pipe.
Further, the outer sleeve is also provided with an oil inlet port and an annular oil inlet cavity which are communicated with each other, and an oil outlet port and an annular oil outlet cavity which are communicated with each other; an oil inlet channel and an oil outlet channel are arranged in the shaft sleeve;
the oil inlet interface and the oil outlet interface penetrate through the outer wall of the outer sleeve, and the annular oil inlet cavity and the annular oil outlet cavity are arranged along the circumferential direction of the outer sleeve and penetrate through the inner wall of the outer sleeve;
the oil inlet port is communicated with the oil inlet of the water pump sequentially through the annular oil inlet cavity and the oil inlet channel, and the oil outlet port is communicated with the oil outlet of the water pump sequentially through the annular oil outlet cavity and the oil outlet channel.
Further, the annular oil inlet cavity and the annular oil outlet cavity are respectively provided with the annular sealing piece on two sides of the axial direction of the shaft sleeve.
Further, a plurality of connecting pipes are further arranged in the shaft sleeve, and a water outlet, an oil inlet and an oil outlet of the water pump are respectively communicated with the corresponding water inlet channel, the corresponding oil inlet channel and the corresponding oil outlet channel through the connecting pipes.
Further, the inner spraying device further comprises bearing covers, wherein the bearing covers are arranged at two ends of the shaft sleeve along the axial direction of the shaft sleeve and are connected with the outer sleeve; and a bearing is arranged between the bearing cover and the shaft sleeve.
Further, an oil seal is arranged at the joint of the bearing cover and the shaft sleeve.
Further, a leakage channel is arranged in the shaft sleeve, one end of the leakage channel is communicated with the water pump accommodating cavity, and the other end of the leakage channel is communicated with the water inlet channel.
Further, the inner spraying device further comprises a sheath, wherein the sheath is positioned between the shaft sleeve and the outer sleeve and sleeved on the shaft sleeve.
The second aspect of the application also provides an internal spraying device for a heading machine, which comprises an outer sleeve, a shaft sleeve and a water pump, wherein the water pump is arranged outside the shaft sleeve and is fixedly connected with the outer wall of the shaft sleeve; the outer sleeve is sleeved outside part of the shaft sleeve, and the water pump and the shaft sleeve can rotate relative to the outer sleeve;
the outer sleeve is provided with a foreign water interface and an annular water inlet cavity which are communicated with each other; the external water interface penetrates through the outer wall of the outer sleeve, and the annular water inlet cavity is arranged along the circumferential direction of the outer sleeve and penetrates through the inner wall of the outer sleeve;
a water inlet channel, a water outlet pipe, a water inlet connecting pipe and a water outlet connecting pipe are arranged in the shaft sleeve; one end of the water inlet channel is communicated with the annular water inlet cavity, and the other end of the water inlet channel is communicated with a water inlet of a water pump outside the shaft sleeve through the water inlet connecting pipe; the water outlet of the water pump is communicated with the water outlet pipe through the water pump connecting pipe, and the water outlet end of the water outlet pipe is arranged towards the head of the cutting part of the heading machine;
the sealing piece is arranged at the joint of the annular water inlet cavity and the water inlet channel, and the sealing ring is arranged on the outer wall of the water outlet end of the water outlet pipe.
The third aspect of the application also provides a cutting mechanism of a heading machine, which comprises the internal spraying device according to any one of the technical schemes;
one end of the inner spraying device is connected with the cutting main shaft, the other end of the inner spraying device is connected with the output shaft of the cutting speed reducer, and the water outlet end of the water outlet pipe of the inner spraying device is arranged towards the cutting main shaft.
Compared with the prior art, the invention has the beneficial effects that:
the application provides an interior atomizer for the entry driving machine to set up between cutting speed reducer output shaft and the cutting main shaft in the entry driving machine cutting part, be used for transmitting moment of torsion and cutting part provides high-pressure water. The inner spraying device comprises an outer sleeve, a shaft sleeve and a water pump, wherein the outer sleeve is sleeved outside the shaft sleeve, the outer sleeve and the shaft sleeve are coaxial, the outer sleeve is fixed, and the shaft sleeve can rotate relative to the outer sleeve. The outer sleeve is provided with an external water port and an annular water inlet cavity, the external water port is used for communicating an external water pipe, the external water port is communicated with the annular water inlet cavity, and water is introduced into the annular water inlet cavity through the external water port so as to form an annular water inlet accommodating cavity. The inner spraying device comprises a shaft sleeve, a water pump accommodating space, a water pump driving device and a water pump driving device, wherein the shaft sleeve is internally provided with a water pump accommodating space for accommodating the water pump; the water inlet channel and the water outlet pipe of the water pump are correspondingly communicated with the water inlet and the water outlet of the water pump, so that the water pump of the internal spraying device is built in; the water pump is internally arranged so that the annular water inlet cavity is communicated with the water inlet channel through low-pressure water, and the sealing pressure is low, so that the reliability of water inlet sealing is improved, the service life of a sealing piece is long, the service life of a spraying system in a cutting part is prolonged, dust on the working face of a heading machine can be effectively restrained for a long time, cutting pick cooling is realized, spark generation caused by cutting is avoided, cutting pick consumption is reduced, and the structure is simple.
The application also provides a cutting mechanism of the heading machine, which comprises the inner spraying device; one end of the inner spraying device is connected with the cutting main shaft, the other end of the inner spraying device is connected with an output shaft of the cutting speed reducer, and the cutting speed reducer can drive the cutting main shaft to rotate through the inner spraying device so as to realize the normal work of the cutting part; meanwhile, a water pump is arranged in the internal spraying device, the water outlet end of the water pump faces the cutting main shaft, and the water enters the spray head of the cutting head through a liquid channel in the cutting main shaft, so that the internal spraying effect is realized. And the water inlet of the inner spraying device is low-pressure water with rotary seal, and the water outlet is high-pressure water with static seal, so that the service life of inner spraying can be greatly prolonged on one hand, and the pressure of inner spraying can be greatly increased on the other hand, thereby improving atomization and cooling effects and reducing the risk of nozzle blockage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of the overall structure of an internal spraying device according to a first embodiment of the present invention;
FIG. 2 is a schematic view showing the overall structure of an internal spraying device according to a first embodiment of the present invention;
FIG. 3 is a cross-sectional view showing the internal structure of an internal spraying device according to a first embodiment of the present invention;
FIG. 4 is a schematic view of the structure of the outer jacket of the inner spraying device according to the first embodiment of the present invention;
FIG. 5 is a schematic view of an inner spray device according to a first embodiment of the present invention when the outer cover is removed;
FIG. 6 is a schematic view showing the position and connection of an inner spray device in a cutting part according to a first embodiment of the present invention;
FIG. 7 is a cross-sectional view showing another internal structure of an internal spray device according to a first embodiment of the present invention;
fig. 8 is a cross-sectional view illustrating an internal structure of an internal spray device according to a second embodiment of the present invention.
Reference numerals:
100-inner spraying device, 110-outer sleeve, 111-external water interface, 112-annular water inlet cavity, 113-annular sealing piece, 114-annular groove, 115-oil inlet interface, 116-oil outlet interface, 117-annular oil inlet cavity, 118-annular oil outlet cavity, 120-shaft sleeve, 121-water pump accommodating cavity, 122-water inlet channel, 123-water outlet pipe, 124-sealing ring, 125-oil inlet channel, 126-oil outlet channel, 127-connecting pipe, 1271-water inlet connecting pipe, 1272-water outlet connecting pipe, 128-leakage channel, 130-bearing cover, 140-bearing, 150-oil seal, 160-sheath, 200-cutting main shaft, 210-cutting part inner runner, 300-cutting speed reducer output shaft, 400-water pump.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown.
The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
An internal spraying device and a heading machine cutting mechanism including the internal spraying device according to some embodiments of the present application are described below with reference to fig. 1 to 6.
Example 1
Referring to FIG. 6, an internal spray device 100 for a heading machine; the inner spraying device 100 is arranged between a cutting speed reducer output shaft 300 and a cutting main shaft 200 in a cutting part of the heading machine and is used for transmitting torque to the cutting main shaft 200 so as to drive the head of the cutting part to rotate; and the interior atomizer 100 has seted up the water pump and has held the chamber 121, is provided with the water pump 400 in holding the chamber 121, consequently can provide high-pressure water to the cutting part through the interior atomizer 100 of this application embodiment.
Specifically, referring to fig. 1 to 3 and 6, the internal spraying device 100 according to the embodiment of the present application includes an outer sleeve 110, a shaft sleeve 120 and a water pump 400, wherein the outer sleeve 110 is sleeved outside the shaft sleeve 120, the two are coaxial, the water pump 400 is disposed in the shaft sleeve 120, the outer sleeve 110 is fixed, and the shaft sleeve 120 and the water pump 400 can rotate relative to the outer sleeve 110; the sleeve 120 is provided with internal splines at both ends thereof, and the sleeve 120 is connected with the cutting speed reducer output shaft 300 and the cutting spindle 200 through the internal splines at both ends thereof, respectively, so that torque can be transmitted between the cutting speed reducer output shaft 300 and the cutting spindle 200.
Referring to fig. 1 to 4 and 6, a casing 110 is provided with a foreign water port 111 and an annular water inlet chamber 112; the external water port 111 penetrates through the outer wall of the outer jacket 110, and the external water port 111 is used for communicating with an external water pipe to supply water to the water pump 400 in the internal spraying device 100; the annular water inlet cavity 112 is disposed along the circumferential direction of the outer jacket 110 and penetrates through the inner wall of the outer jacket 110, and the external water port 111 is communicated with the annular water inlet cavity 112, and water is introduced into the annular water inlet cavity 112 through the external water port 111 so as to form an annular water inlet accommodating cavity.
Referring to fig. 3 and 6, a water pump accommodating chamber 121, a water inlet passage 122 and a water outlet pipe 123 are provided in the sleeve 120; the water pump accommodating chamber 121 is used for accommodating the water pump 400, so that the water pump 400 and the shaft sleeve 120 can synchronously rotate; one end of the water inlet channel 122 is communicated with the annular water inlet cavity 112, and the annular water inlet cavity 112 is in annular communication, so that the water inlet channel 122 and the annular water inlet cavity 112 can be ensured to be communicated at any time in the rotating process of the shaft sleeve 120; the other end of the water inlet channel 122 is communicated with the water inlet of the water pump 400, so that the water pump 400 is supplied with water in real time; the water outlet pipe 123 is communicated with the water outlet of the water pump 400, and the water outlet end of the water outlet pipe 123 is arranged towards the head of the cutting part of the heading machine, the water outlet end of the water outlet pipe 123 is communicated with the internal flow passage 210 of the cutting part, and water is sprayed out through a nozzle arranged on the head of the cutting part.
Referring to fig. 3, in order to ensure the rotary sealing of the water inlet passage 122 and the annular water inlet chamber 112 during the rotation of the sleeve 120, a sealing member is provided at the junction of the annular water inlet chamber 112 and the water inlet passage 122. And because the spraying device 100 is built-in with the water pump 400 in this application, the water inlet end of water pump 400 is low-pressure water, and the water outlet end is high-pressure water, is the low-pressure water intercommunication between annular inlet chamber 112 and the inlet channel 122 promptly, and sealing pressure is little, therefore sealed reliability is high, and the life of sealing member is long to the life of spraying system in the cutting part has been prolonged.
It should be noted that, the shape and size of the cavity of the water pump accommodating cavity 121 in the shaft sleeve 120 are adapted to the water pump 400, so as to accommodate the water pump 400 and limit the water pump 400, so that the water pump 400 and the shaft sleeve 120 can realize synchronous rotation. In addition, the water pump 400 used in the present application may be an electrically driven water pump 400, a hydraulically driven water pump 400, or the like.
In summary, the internal spraying device 100 of the embodiment of the present application realizes that the water pump 400 of the internal spraying device 100 is built-in by internally providing a water pump accommodating space for accommodating the water pump 400 and correspondingly providing the water inlet channel 122, the water outlet pipe 123, and the like of the water pump 400; the water pump 400 is internally provided with the annular water inlet cavity 112 and the water inlet channel 122 which are communicated with low-pressure water, so that the sealing pressure is low, the reliability of water inlet sealing is improved, the service life of a sealing piece is prolonged, the service life of a spraying system in a cutting part is prolonged, dust on the working face of a heading machine can be effectively restrained for a long time, cutting pick cooling is realized, spark generation caused by cutting is avoided, and cutting pick consumption is reduced.
Referring to fig. 3, in the embodiment of the present application, preferably, the sealing member is an annular sealing member 113, and the annular sealing member 113 is disposed at both sides of the annular water inlet chamber 112 in the axial direction of the sleeve 120, so that the communication is sealed from both sides of the communication between the annular water inlet chamber 112 and the water inlet passage 122.
Preferably, as shown in fig. 3, an annular groove 114 is provided on the inner wall surface of the outer sleeve 110 at the positions corresponding to the annular sealing rings 124 on both sides of the annular water inlet cavity 112, the annular sealing member 113 is located in the annular groove 114, and the annular groove 114 plays a limiting role on the annular sealing member 113.
Preferably, the annular seal 113 may be a seal such as a rubber seal 124.
In the embodiment of the present application, the water discharged from the water outlet pipe 123 of the water pump 400 is high-pressure water, and the discharged high-pressure water enters the inner flow channel 210 of the cutting part and then enters the nozzle of the head of the cutting part to realize cooling and spraying. In order to ensure the sealing connection between the water outlet pipe 123 of the water pump 400 and the internal flow channel 210 of the cutting part, as shown in fig. 3, in the embodiment of the present application, a sealing ring 124 is disposed on the outer wall of the water outlet end of the water outlet pipe 123, and the sealing connection between the water outlet end of the water outlet pipe 123 and the internal flow channel 210 of the cutting part can be realized through the sealing ring 124. Because the water pump 400, the internal spraying device 100 and the cutting speed reducer output shaft 300 synchronously rotate, the cutting part internal flow passage 210 is positioned in the cutting main shaft 200, and therefore the water outlet pipe 123 of the water pump 400 and the cutting part internal flow passage 210 synchronously rotate; and just because the water outlet pipe 123 of the water pump 400 and the inner flow passage 210 of the cutting part synchronously rotate, the sealing between the high-pressure water outlet end of the water pump 400 and the inner flow passage 210 of the cutting part is static sealing, the sealing effect is good, the reliability is high, and the service life of the sealing ring 124 is long. Meanwhile, as the water inlet of the inner spraying device 100 is low-pressure water with rotary seal and the water outlet is high-pressure water with static seal, the water outlet pressure can be greatly improved, and the water outlet pressure is increased to 8MPa from the existing 2 MPa; and along with the improvement of the water outlet pressure, the internal spraying pressure can be improved, so that the atomization and cooling effects are good, and the risk of nozzle blockage is reduced.
Preferably, the number of the sealing rings 124 on the outer wall of the water outlet end of the water outlet pipe 123 is multiple, and the sealing rings 124 are arranged at intervals, so that the sealing effect is better.
In the embodiment of the present application, preferably, when the water pump 400 used in the present application is a hydraulically driven water pump, hydraulic oil is required to be provided to a hydraulic cylinder of the hydraulically driven water pump to ensure the normal operation of the water pump 400. Thus, referring to fig. 3 and 4, in the embodiment of the present application, an oil inlet port 115, an oil outlet port 116, an annular oil inlet cavity 117 and an annular oil outlet cavity 118 are further provided on the outer sleeve 110, and an oil inlet channel 125 and an oil outlet channel 126 are provided in the sleeve 120. The oil inlet and outlet structure principles of the water pump 400 are similar to those of the water inlet structure principles, specifically, the oil inlet port 115 and the oil outlet port 116 penetrate through the outer wall of the outer sleeve 110, and the oil inlet port 115 and the oil outlet port 116 are respectively connected with an oil inlet pipe and an oil outlet pipe, so that oil supply and oil discharge of the water pump 400 are realized. The annular oil inlet cavity 117 and the annular oil outlet cavity 118 are arranged along the circumferential direction of the outer sleeve 110 and penetrate through the inner wall of the outer sleeve 110; the oil inlet port 115 is communicated with an oil inlet of the water pump 400 sequentially through the annular oil inlet cavity 117 and the oil inlet channel 125, and real-time oil supply of the water pump 400 is realized in the rotating process of the shaft sleeve 120; the oil outlet port 116 is communicated with the oil outlet of the water pump 400 sequentially through the annular oil outlet cavity 118 and the oil outlet channel 126, and real-time oil discharge of the water pump 400 is realized in the rotation process of the shaft sleeve 120.
In the embodiment of the present application, preferably, in order to ensure the tightness of the communication positions of the annular oil inlet cavity 117 and the annular oil outlet cavity 118 with the corresponding oil inlet channel 125 and the corresponding oil outlet channel 126, the situation that oil leaks into the annular water inlet cavity 112 to pollute water inlet is avoided, as shown in fig. 3, in the embodiment of the present application, annular sealing elements 113 are also respectively arranged on two sides of the annular oil inlet cavity 117 along the axial direction of the outer sleeve 110 and two sides of the annular oil outlet cavity 118 along the axial direction of the outer sleeve 110, so as to realize the rotary sealing of the oil inlet communication position and the oil outlet communication position, and ensure the normal operation of the water pump 400 and the internal spraying device 100.
Preferably, as shown in fig. 3, annular grooves 114 are respectively arranged on the inner wall surface of the outer sleeve 110 at annular sealing members 113 corresponding to the two sides of the annular oil inlet cavity 117 and the annular oil outlet cavity 118, the annular sealing members 113 are positioned in the annular grooves 114, and the annular grooves 114 play a limiting role on the annular sealing members 113.
It should be noted that, referring to fig. 3, the annular water inlet cavity 112, the annular water inlet cavity 117 and the annular water outlet cavity 118 in the embodiment of the present application are disposed at intervals along the axial direction of the outer sleeve 110, and two adjacent annular cavities may share one annular sealing member 113, so as to simplify the structure.
In addition, the water inlet channel 122, the oil inlet channel 125 and the oil outlet channel 126 may be arranged in parallel, or may not be arranged in parallel, so long as the three are not communicated, and the three may be selectively arranged according to the internal structural space of the internal spraying device 100.
In the embodiment of the present application, preferably, when the water inlet direction of the outer sleeve 110 is perpendicular to the water inlet direction of the water pump 400, the water inlet channel 122 needs to be turned between the water inlet accommodating cavity and the water inlet of the water pump 400, in order to ensure the communication stability between the water inlet channel 122 and the water pump 400, as shown in fig. 3, the extending direction of the water inlet channel 122 is set to be in the same direction as the water inlet direction of the outer sleeve 110, and the connecting tube 127 is additionally arranged in the shaft sleeve 120, and the connecting tube 127 plays a role of turning the communication. Specifically, the extension direction of the connection pipe 127 is the same as the water inlet direction of the water pump 400, and one end of the connection pipe 127 is communicated with the water inlet of the water pump 400, and the other end of the connection pipe 127 is communicated with the water inlet channel 122, so that the water inlet channel 122 is communicated with the water pump 400.
Similarly, referring to fig. 3, for both the oil inlet channel 125 and the oil outlet channel 126, a connection pipe 127 may be correspondingly disposed in the shaft sleeve 120, and the oil inlet channel 125 and the oil inlet of the water pump 400 and the oil outlet channel 126 are communicated by the steering communication of the connection pipe 127.
In the embodiment of the present application, preferably, in order to fix the outer sleeve 110 and ensure the relative movement between the outer sleeve 110 and the shaft sleeve 120, referring to fig. 1 to 3, the internal spraying device 100 further includes bearing caps 130, and the bearing caps 130 are disposed at both ends of the shaft sleeve 120 along the axial direction of the shaft sleeve 120 and are fixedly connected to the end surfaces of both ends of the outer sleeve 110 by screws, respectively. The two ends of the shaft sleeve 120 respectively pass through the bearing cover 130, and a bearing 140 is arranged between the bearing cover 130 and the shaft sleeve 120, the inner ring of the bearing 140 is fixed with the shaft sleeve 120, and the outer ring of the bearing 140 is fixed with the bearing cover 130 (the outer sleeve 110), so that the rotation of the shaft sleeve 120 can be realized through the bearing 140.
Preferably, as shown in fig. 3, the two ends of the shaft sleeve 120 are respectively provided with a step part, the bearing cover 130 and the bearing 140 are both sleeved at the step part of the shaft sleeve 120, the outer edge of the bearing cover 130 is fixed with the outer sleeve 110, and a gap is arranged between the inner edge of the bearing cover 130 and the shaft sleeve 120; and the bearing 140 is positioned between the bearing cap 130 and the stepped surface of the sleeve 120 such that the inner ring of the bearing 140 is coupled to the sleeve 120 and the outer ring of the bearing 140 is coupled to the bearing cap 130.
In the embodiment of the present application, preferably, in order to avoid that the lubricating oil in the cavity of the bearing 140 flows out from the cavity and flows out through the gap between the bearing cover 130 and the shaft sleeve 120 during the working process of the bearing 140, as shown in fig. 3, an oil seal 150 is disposed at the joint between the bearing cover 130 and the shaft sleeve 120, for sealing the opening of the cavity of the bearing 140 towards one side of the bearing cover 130.
In the embodiment of the present application, preferably, as shown in fig. 7, a leakage passage 128 is provided in the sleeve 120, and one end of the leakage passage 128 communicates with the water pump accommodating chamber 121 and the other end communicates with the water inlet passage 122. The leakage channel 128 is used for discharging water and oil leaked by the water pump 400 in the water pump accommodating cavity 121, so that the leaked water and oil are prevented from accumulating in the water pump accommodating cavity 121, meanwhile, the leaked water and oil can be prevented from entering the bearing cavity, the lubrication of the bearing 140 is affected, and the pollution to the cutting part can be avoided. The leakage channel 128 discharges the leaked water and oil to the water inlet channel 122 for recovery, and the leaked water and oil are discharged from the water outlet end of the water pump 400 as the water enters the water pump 400, so as to realize automatic discharge of the leaked water and oil.
In the embodiment of the present application, preferably, as shown in fig. 3 and 5, a sheath 160 is disposed between the sleeve 120 and the outer jacket 110, and the sheath 160 can block the bearing cavity from communicating with the water pump accommodating cavity 121, so as to further prevent the leakage water and leakage oil of the water pump 400 from entering the bearing cavity, and affect lubrication of the bearing 140. The leaked water and the leaked oil of the water pump 400 are communicated with the water inlet channel 122 through the leakage channel 128 inside the shaft sleeve 120 after being mixed, and the leaked water and the leaked oil re-enter the water pump 400 for recycling, so that the leaked water and the leaked oil can be prevented from being discharged to the external pollution cutting part of the internal spraying device 100. Preferably, a sealing ring is arranged among the water outlet pipe 123, the sheath 160 and the shaft sleeve 120, and is used for sealing the water pump accommodating cavity 121.
It should be noted that, referring to fig. 5, the sheath 160 is sleeved outside the shaft sleeve 120 and corresponds to the position of the water pump 400, and the sheath 160 does not cover the water inlet channel 122, the oil inlet channel 125 and the oil outlet channel 126 of the shaft sleeve 120, so as to ensure the communication between the water path and the oil path.
Example two
An internal spraying device 100 is used for a heading machine, and is shown in fig. 8, and comprises an outer sleeve 110, a shaft sleeve 120 and a water pump 400, wherein the water pump 400 is arranged outside the shaft sleeve 120, and the water pump 400 is fixedly connected with the outer wall of the shaft sleeve 120; the outer sleeve 110 is sleeved outside part of the shaft sleeve 120, and the water pump 400 and the shaft sleeve 120 can rotate relative to the outer sleeve 110; the outer sleeve 110 is provided with a foreign water port 111 and an annular water inlet cavity 112 which are communicated with each other; the external water port 111 penetrates through the outer wall of the outer sleeve 110, and the annular water inlet cavity 112 is arranged along the circumferential direction of the outer sleeve 110 and penetrates through the inner wall of the outer sleeve 110; the sleeve 120 is internally provided with a water inlet channel 122, a water outlet pipe 123, a water inlet connecting pipe 1271 and a water outlet connecting pipe 1272; one end of the water inlet channel 122 is communicated with the annular water inlet cavity 112, and the other end of the water inlet channel 122 is communicated with a water inlet of the water pump 400 outside the shaft sleeve 120 through a water inlet connecting pipe 1271; the water outlet of the water pump 400 is communicated with the water outlet pipe 123 through a water outlet connecting pipe 1272, and the water outlet end of the water outlet pipe 123 is arranged towards the head of the cutting part of the heading machine; a sealing member is arranged at the joint of the annular water inlet cavity 112 and the water inlet channel 122, and a sealing ring is arranged on the outer wall of the water outlet end of the water outlet pipe 123.
The internal spraying device 100 provided in this embodiment externally places the water pump 400, but the water pump 400 is fixedly connected with the outer wall of the shaft sleeve 120, so that the water pump 400 can rotate synchronously with the shaft sleeve 120. The water inlet of the water pump 400 is realized by matching the water inlet channel 122 in the shaft sleeve 120 with the water inlet connecting pipe 1271, and the water outlet of the water pump 400 is realized by arranging the water outlet connecting pipe 1272 in the shaft sleeve 120, so that the water outlet of the water pump 400 is communicated with the water outlet pipe 123. The water inlet principle and the water outlet principle of the water pump 400 in this embodiment are the same as those of the first embodiment, and only the setting positions of the water pump 400 are different, so that the operation process of the water inlet and outlet of the water pump 400 and the internal spraying device 100 will not be repeated. In addition, the sealing element is arranged at the joint of the annular water inlet cavity 112 and the water inlet channel 122, and the annular water inlet cavity 112 is communicated with the water inlet channel 122 through low-pressure water, so that the sealing pressure is low, the reliability of water inlet sealing can be improved, and the service life of the sealing element can be prolonged; the sealing ring is arranged on the outer wall of the water outlet end of the water outlet pipe 123, and the water outlet pipe 123 of the water pump 400 and the inner flow passage 210 of the cutting part synchronously rotate, so that the sealing between the high-pressure water outlet end of the water pump 400 and the inner flow passage 210 of the cutting part is static sealing, the sealing effect is good, the reliability is high, and the service life of the sealing ring 124 is long. In summary, the inner spraying device 100 of this embodiment can realize that the water inlet of the water pump 400 is sealed by low-pressure water rotation and the outlet is sealed by high-pressure water static by setting the water pump 400 and the shaft sleeve 120 to synchronously rotate, thereby prolonging the service life of the spraying system in the cutting part, effectively inhibiting dust on the working surface of the heading machine for a long time, realizing cutting pick cooling, avoiding spark generation during cutting and reducing cutting pick consumption.
In addition, the internal spraying device 100 of the present embodiment is an improvement on the basis of the first embodiment, and the technical content disclosed in the first embodiment is also applicable to the internal spraying device 100 of the present embodiment, so the technical content disclosed in the first embodiment will not be repeated, and the disclosure of the first embodiment also belongs to the protection scope of the present embodiment.
Example III
A heading machine cutting mechanism comprising the internal spraying device 100 of any of the embodiments described above; referring to fig. 6, one end of the inner spray device 100 is connected with the cutting spindle 200, and the other end is connected with the cutting speed reducer output shaft 300, and the cutting speed reducer can drive the cutting spindle 200 to rotate through the inner spray device 100, so that the normal operation of the cutting part is realized; meanwhile, the water pump 400 is arranged in the internal spraying device 100, the water outlet end of the water pump 400 is arranged towards the cutting main shaft 200, and enters the spray head of the cutting part through the internal flow passage 210 of the cutting part in the cutting main shaft 200, so that the internal spraying effect is realized. And the water inlet of the inner spraying device 100 is low-pressure water with rotary seal, and the water outlet is high-pressure water with static seal, so that on one hand, the service life of inner spraying can be greatly prolonged, and on the other hand, the pressure of inner spraying can be greatly increased, thereby improving atomization and cooling effects and reducing the risk of nozzle blockage.
It should be noted that, in fig. 6, the internal spraying device 100 disposed in the cutting portion is the internal spraying device 100 provided in the first embodiment of the present application, and the internal spraying device 100 in the second embodiment of the present application is not shown, but the manner in which the two internal spraying devices 100 are disposed in the cutting portion is the same, and will not be described in detail.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (12)
1. An inner spraying device is used for a heading machine and is characterized by comprising an outer sleeve, a shaft sleeve and a water pump, wherein the outer sleeve is sleeved outside the shaft sleeve, the water pump is positioned in the shaft sleeve, and the water pump and the shaft sleeve can rotate relative to the outer sleeve;
the outer sleeve is provided with a foreign water interface and an annular water inlet cavity which are communicated with each other; the external water interface penetrates through the outer wall of the outer sleeve, and the annular water inlet cavity is arranged along the circumferential direction of the outer sleeve and penetrates through the inner wall of the outer sleeve;
a water pump accommodating cavity, a water inlet channel and a water outlet pipe are arranged in the shaft sleeve; the water pump accommodating cavity is used for accommodating a water pump; one end of the water inlet channel is communicated with the annular water inlet cavity, and the other end of the water inlet channel is communicated with a water inlet of the water pump; the water outlet pipe is communicated with the water outlet of the water pump, and the water outlet end of the water outlet pipe is arranged towards the head of the cutting part of the heading machine;
and a sealing piece is arranged at the joint of the annular water inlet cavity and the water inlet channel.
2. The internal spray device of claim 1, wherein the seal is an annular seal disposed on both sides of the annular water inlet chamber along an axial direction of the sleeve.
3. An internal spraying device according to claim 2, wherein a sealing ring is provided on the outer wall of the outlet end of the outlet pipe.
4. The internal spraying device according to claim 3, wherein the outer sleeve is further provided with an oil inlet port and an annular oil inlet cavity which are communicated with each other, and an oil outlet port and an annular oil outlet cavity which are communicated with each other; an oil inlet channel and an oil outlet channel are arranged in the shaft sleeve;
the oil inlet interface and the oil outlet interface penetrate through the outer wall of the outer sleeve, and the annular oil inlet cavity and the annular oil outlet cavity are arranged along the circumferential direction of the outer sleeve and penetrate through the inner wall of the outer sleeve;
the oil inlet port is communicated with the oil inlet of the water pump sequentially through the annular oil inlet cavity and the oil inlet channel, and the oil outlet port is communicated with the oil outlet of the water pump sequentially through the annular oil outlet cavity and the oil outlet channel.
5. The internal spray device according to claim 4, wherein the annular oil inlet chamber and the annular oil outlet chamber are also provided with the annular seal member respectively on both sides in the axial direction of the sleeve.
6. The internal spraying device of claim 4, wherein a plurality of connecting pipes are further arranged in the shaft sleeve, and the water outlet, the oil inlet and the oil outlet of the water pump are respectively communicated with the corresponding water inlet channel, the corresponding oil inlet channel and the corresponding oil outlet channel through the connecting pipes.
7. The internal spray device according to any one of claims 1 to 5, further comprising bearing caps provided at both ends of the sleeve in an axial direction of the sleeve and connected to the outer jacket; and a bearing is arranged between the bearing cover and the shaft sleeve.
8. The internal spray device of claim 7, wherein an oil seal is provided at a seam between the bearing cap and the sleeve.
9. The internal spray device of claim 7, wherein a leakage path is provided in the sleeve, one end of the leakage path being in communication with the water pump receiving chamber and the other end being in communication with the water inlet path.
10. The internal spray device of claim 8, further comprising a sheath positioned between said sleeve and said outer jacket and over said sleeve.
11. An inner spraying device is used for a heading machine and is characterized by comprising an outer sleeve, a shaft sleeve and a water pump, wherein the water pump is arranged outside the shaft sleeve and is fixedly connected with the outer wall of the shaft sleeve; the outer sleeve is sleeved outside part of the shaft sleeve, and the water pump and the shaft sleeve can rotate relative to the outer sleeve;
the outer sleeve is provided with a foreign water interface and an annular water inlet cavity which are communicated with each other; the external water interface penetrates through the outer wall of the outer sleeve, and the annular water inlet cavity is arranged along the circumferential direction of the outer sleeve and penetrates through the inner wall of the outer sleeve;
a water inlet channel, a water outlet pipe, a water inlet connecting pipe and a water outlet connecting pipe are arranged in the shaft sleeve; one end of the water inlet channel is communicated with the annular water inlet cavity, and the other end of the water inlet channel is communicated with a water inlet of a water pump outside the shaft sleeve through the water inlet connecting pipe; the water outlet of the water pump is communicated with the water outlet pipe through the water pump connecting pipe, and the water outlet end of the water outlet pipe is arranged towards the head of the cutting part of the heading machine;
the sealing piece is arranged at the joint of the annular water inlet cavity and the water inlet channel, and the sealing ring is arranged on the outer wall of the water outlet end of the water outlet pipe.
12. A heading machine cutting mechanism comprising an internal spraying device as claimed in any one of claims 1 to 11;
one end of the inner spraying device is connected with the cutting main shaft, the other end of the inner spraying device is connected with the output shaft of the cutting speed reducer, and the water outlet end of the water outlet pipe of the inner spraying device is arranged towards the cutting main shaft.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910288077.6A CN109882171B (en) | 2019-04-10 | 2019-04-10 | Internal spraying device and cutting mechanism of heading machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910288077.6A CN109882171B (en) | 2019-04-10 | 2019-04-10 | Internal spraying device and cutting mechanism of heading machine |
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| CN109882171A CN109882171A (en) | 2019-06-14 |
| CN109882171B true CN109882171B (en) | 2024-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0235319A1 (en) * | 1986-02-27 | 1987-09-09 | Bergwerksverband GmbH | Spraying installation for heading machines |
| US6102485A (en) * | 1998-03-06 | 2000-08-15 | Minnovation Limited | Water seal arrangement |
| CN103174421A (en) * | 2013-03-11 | 2013-06-26 | 中国矿业大学 | Automatic hydraulic rock breaking pick |
| CN105464663A (en) * | 2015-12-31 | 2016-04-06 | 辽宁鑫众科技股份有限公司 | Cutting part of inner spraying type heading machine |
| CN106907150A (en) * | 2017-04-19 | 2017-06-30 | 江西理工大学 | A kind of improved tunnelling machine |
| CN210105856U (en) * | 2019-04-10 | 2020-02-21 | 佳木斯智研矿山机械有限公司 | Inner spraying device and cutting mechanism of heading machine |
-
2019
- 2019-04-10 CN CN201910288077.6A patent/CN109882171B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0235319A1 (en) * | 1986-02-27 | 1987-09-09 | Bergwerksverband GmbH | Spraying installation for heading machines |
| US6102485A (en) * | 1998-03-06 | 2000-08-15 | Minnovation Limited | Water seal arrangement |
| CN103174421A (en) * | 2013-03-11 | 2013-06-26 | 中国矿业大学 | Automatic hydraulic rock breaking pick |
| CN105464663A (en) * | 2015-12-31 | 2016-04-06 | 辽宁鑫众科技股份有限公司 | Cutting part of inner spraying type heading machine |
| CN106907150A (en) * | 2017-04-19 | 2017-06-30 | 江西理工大学 | A kind of improved tunnelling machine |
| CN210105856U (en) * | 2019-04-10 | 2020-02-21 | 佳木斯智研矿山机械有限公司 | Inner spraying device and cutting mechanism of heading machine |
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| CN109882171A (en) | 2019-06-14 |
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